Home›Birds›Lifespan›15.400000Browse By15.400000FactsLifespanSourcesComments (0)Reader Challenges (0)FactsComparisonReproductive ModeWell-attestedOviparous (Egg-Laying) 1Lifespan45.000000Lifespan2 entries45.200000Lifespan1 entry46.400000Lifespan1 entry47.000000Lifespan1 entry48.000000Lifespan2 entries49.000000Lifespan2 entries49.700000Lifespan1 entry5.000000Lifespan2 entries5.200000Lifespan1 entry5.600000Lifespan1 entry5.900000Lifespan2 entries50.000000Lifespan3 entries51.000000Lifespan1 entry56.300000Lifespan1 entry57.000000Lifespan1 entry58.800000Lifespan1 entry6.000000Lifespan2 entries68.000000Lifespan1 entry69.000000Lifespan1 entry7.000000Lifespan2 entries7.500000Lifespan1 entry75.000000Lifespan1 entry79.000000Lifespan1 entry8.500000Lifespan1 entry8.600000Lifespan1 entry8.800000Lifespan1 entry9.000000Lifespan1 entry9.100000Lifespan2 entries9.300000Lifespan2 entries9.600000Lifespan1 entryShowing 151 to 180 of 180, page 4 of 4.← Previous1234Sources1. Wikipedia: Birdtier 2WikipediaBird, lead sectionQuote, Bird, lead sectionthe laying of hard-shelled eggsView the SourceComments (0)No comments yet. Be the first to share a thought.Sign in to join the discussion.Reader Challenges (0)No disputes yet. Spotted an error or a better source? Open the first one.Sign in to dispute this or suggest a correction.